Spring-motor



(No Model.) 2 Sheets-Sheet 1.

A. WIRTH. SPRING MOTOR.

No. 438,668. Patented Aug. 5, 1890.

WITNESSES: INVENTOR ATTORNEY.

2 Sheets-Sheet 2. A. WI-RTH.

SPRING MOTOR.

(No Model.)

No. 433,668. Patented Aug. 5, 1890.

WITNESSES: W W

ATTORNEY.

UNITED STATES PATENT @EEICE.

ALEXANDER WVIRTI-I, OF PARSONS, KANSAS.

SPRING- MOTOR.

SPEOIFIGATION forming part of Letters Patent N 0. $3,668, dated August5, 1890.

' Application filed June 3, 1890. Serial No. 354,185. (No model.)

sons, in the county of Labette and State of Kansas, have inventedcertain new and useful Improvements in Spring-Motors; and Ido declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

This invention has relation to new and useful improvements inspring-motors.

The object of this invention is to provide a neat, compact, andeflicacious spring-1notor that will combine lightness with great powerand be adapted to furnish the motive force for the lighter class ofspecial machinery, such as sewing-machines, dental engines, churns, &c.

The invention consists in the arrangement and combination of a system ofgearing with suitable supporting and regulating effects, as will bedescribed more fully hereinafter.

Figure 1 represents an end elevation of my motor; Fig. 2, a front viewshowing clamp for fastening the motor, and Fig. 3 illustrates a rearview showing parts broken away to illustrate the arrangement of gearsand springs.

Centrally and transversely Within a suitable standard A is mounted amain driving-shaft a, which works within bearings of the front and rearplates of said standard, as shown in Fig. 1. To this shaft are securedtwo coilsprings B B, between which is mounted a main driving-gear B,which works loosely upon the shaft 04-, and to which the springs B B aresecured at their outer ends. Immediately above the main shafta is fixeda stub-shaft a, which is secured to a suitable projection of thestandard, as shown. This stub-shaft carries a special gear, which isprovided with a body portion between which one of the drivingspringsworks, as shown, and comprises the gear 0 and pinion c, which are heldupon said stub by .means of a collar. The pinion c meshes with the maindriving-gear B, while the gear 0 is connected with the pinion cl,forming part of the compound gear D, which works loosely upon the shafta. This gear is provided with a suitable groove in Which a brake-collar6 works, and by means of which the speed of the train of gearingisregulated.

\Vithout and loosely mounted upon the shaft a is the crank-arm E, whichis provided at the free end with an enlargement which forms a journalfor a pointed transmissionshaft ei which is provided with a crank-pinion6, meshing with the com pound gear D,as

illustrated, while upon the outside the transmission-shaft is furtherprovided With a beltpulley F or othersuitable means forthe transmissionof power. So as to give the drivingbelt any desired tension, 1 providethe front standard-plate with a curved slot G, within which athumb-screw I works and by means of which the crank-arm E may be lockedat any desired angle, so that the crank-pinion a may be fixed at anypoint within a radius of one hundred and eighty degrees, the pinion 6being free to travel upon the gear D, as will be understood by referringto the drawings. Upon the rear portion the main shaft a is provided witha gear 9, which is fixed to said shaft and which meshes with thewinding-gear g, supported upon a suitable stub-shaft K below thedriving-shaft a. This shaft is provided without with a ratchet-wheel 9which is engaged by the pawl 9 pivoted to the collar 72., and whichworks loosely upon the said stubshaft. The collar It has a rectangularstock, to which is secured the actuating-lever H, by means of which thesprings B B are wound. To lock the gearing in Winding, I provide thegear 9 with a pawl 'm, fixed to the standard and which prevents any lossof motion.

The actuating-lever H may be adjusted any desired height by means of asuitable screw, as shown in Fig. 3.

The brake-collar e (shown in dotted lines in Fig. 2) is similar to andoperates in the manner of an ordinary eccentric-strap. The strap isprovided with two depending arms or n, the one marked a being providedwith a threaded eye, which is engaged by the adj ustment-screw M, whichworks within an angular rocker-bar 0, which is pivoted to the base orbed plate,,,as shown. The lower horizontal arm of the rocker-bar o restsupon the shorter arm of a pivoted key-lever 0', and any press urebrought to bear upon the key-lever will force the lowerarin of therocker-bar upward, and thus carry forward the adj listing-screw M, andthis screw in turn will force the depending arm n of the brake tightlyupon its bearing, and thus by means of the friction check the speed ofthe wheels. The train of gearing is stopped and started by means of theadjustment-screw n Having thus described my said invention, what I claimas new, and desire to secure by United States Letters Patent, is-

1. In a spring-motor, the combination,with a main driving-shaft and twocoil-springs, of a main driving-gear working loosely upon said shaft andconnected to said coil-springs, a compound gear mounted above said mainshaft and meshing with said driving-gear and the pinion of asecondcompound gear working freely upon said main driving-shaft, and anadjustable crank-arm movably connected to said main shaft and having apinion meshing with the said free gear, and suitable supporting,winding, and checking devices, all arranged substantially as shown anddescribed.

2. In a spring-motor comprising a main driving-shaft and maindriving-gear loosely mounted upon said shaft and secured to a suitablecoil spring or springs, the combination of a compound gear meshing withsaid driving-gear and the pinion of a compound gear upon saiddriving-shaft, said compound gear meshing with a pinion working withinan adjustable crank-arm, said crank-pinion being provided with a pointedstub-shaft adapted to transmit the rotary power from said train ofgearing, and an adjustable actu ating-lever by means of which saidsprings are wound, all arranged and adapted to operate substantially asshown and described.

3. In a spring-motor comprising a set of springs and a train of gearing,a checking device comprising a collar working within a groove of one ofsaid gears of said motor, two depending arms, an adjusting-screw forengaging said arms, a suitable rocker-bar, and a key-lever arranged tocheck the speed of said spring-motor, all adapted to work substantiallyas shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

ALEXANDER WIR'IH.

Witnesses:

F. E. ROBERTS, G. W. Sons.

